mental workload is one of the factors that influence individuals’ performance in the work environment as well as their efficiency and productivity. the present study aimed at examining the association between mental workload and general health among welders of tehran heavy structuress metal company.this cross-sectional study was conducted in 2016. the sample included 100 welders who were workin...

Integrated Vehicle Health Management " Automated detection, diagnosis, prognosis to enable mitigation of adverse events during flight. " This document was developed over the past several months by NASA to define the rationale, scope and detailed content of a comprehensive Aviation Safety, Integrated Vehicle Health Management research project. It contains references to past work and an approach ...

a Universities Space Research Association, Columbia, MD 21044, USA b Biospheric Sciences Laboratory, National Aeronautics and Space Administration/Goddard Space Flight Center, Greenbelt, MD 20771, USA c Sigma Space Corporation, Lanham, MD 20706, USA d Climate and Radiation Laboratory, Code 613, National Aeronautics and Space Administration Goddard Space Flight Center, Greenbelt, MD 20771, USA e...

Since the 1980’s the National Aeronautics and Space Administration (NASA) has used technology readiness level (TRL) as a means to assess the maturity of a particular technology and a scale to compare technologies. In 1999, the Department of Defense (DoD) embraced a similar TRL concept in their programs. The TRL scale is a measure of maturity of an individual technology, with a view towards oper...

Classification Jon Hakkila and Timothy W. Giblin Department of Physics and Astronomy, College of Charleston, Charleston, SC, 29424 Richard J. Roiger and David J. Haglin Department of Computer and Information Sciences, Minnesota State University, Mankato, MN 56001 William S. Paciesas Department of Physics, University of Alabama in Huntsville, Huntsville, AL 35899 and Charles A. Meegan NASA, Mars...

1GVSA and University of Tasmania, 20 Virgina Court, Sandy Bay, Tasmania, Australia 2 Lakehead University, 955 Oliver Road, Thunder Bay, ON, Canada P7B 5E1 3 Instituto Superior de Engenharia do Porto GECAD, 4200-072 Porto, Portugal 4University of Perugia, Via Vanvitelli 1, I-06123 Perugia, Italy 5National Chiao Tung University, 1001 Ta Hsueh Road, Hsinchu 300, Taiwan 6 JPL NASA, The California I...

(1) Center for Atmospheric Research, University of Massachusetts Lowell, 600 Suffolk Street, Lowell, Ma 01854, USA, E-mail: [email protected] (2) As (1) above, but E-mail: [email protected] As (1) above, but E-mail: [email protected] As (1) above, but E-mail: [email protected] As (1) above, but E-mail: [email protected] NASA Goddard Space Flight Center, Greenbelt, MD 20771,...

The NASA Goddard Space Flight Center and the University of Maryland Institute for Advanced Computer Studies are studying mechanisms for installing and managing Storage Area Networks (SANs) that span multiple independent collaborating institutions using Storage Area Network Routers (SAN Routers). We present a framework for managing inter-site distributed SANs that uses Grid Technologies to balan...

NASA's Goddard Earth Observing System (GEOS) Earth System Model (ESM) is a modular, general circulation model (GCM), and data assimilation system (DAS) that is used to simulate and study the coupled dynamics, physics, chemistry, and biology of our planet. GEOS is developed by the Global Modeling and Assimilation Office (GMAO) at NASA Goddard Space Flight Center. It generates near-real-time anal...